The use of forecasting, and, in particular, using time series forecasting, goes beyond the scope of a few stocks. Hence, in this chapter, we will also cover the forecasting of portfolios. A portfolio can be defined as simply a range of investments held by a person or organization. An individual may have multiple stocks. Thus, the need to look at the scenarios where investment in a single stock needs to be assessed against holdings in other stocks. Certainly, there must also be other investment instruments that a person can hold. What about gold, bonds, real estate, and the now in vogue cryptocurrencies, such as Bitcoin?
Most organizations deal with multiple items in a portfolio. These items are usually spread across asset and liability classes. The portfolio usually isn't compiled in a day. It evolves over a period of time, and there are entrants and...